Combined door-bell and alarm.



H. W. DUBBS.

ED DODR BELL AND ALLRM APPLIUAT COMBIN ION FILED AUG.13,1908.

HENRY W. DUBBS, F ST. LOUIS, MISSOURI.

COMBINED DQOR-BELL AND ALA.RM

Specification of Lettera Patent.

Application filed August 13, 1908. Serial No. 448,360.

Patented .nay zo, reos.

Combined Door-Bells and Alarms, of whichv the following is a speci'tication The object of my invention is to provide a simple, compact and efficient device whereby the bell whichserves as a door bell is also designed to act as a burglar alarm withoutremoving the device from its fixed position on the door. rlhis l accomplish by -means of a novel arrangement and construction of the several parts in connection. with rollers located on the door and brought in contact with the ,bell as hereinafter explained'. The device is also capable of being used as a window alarm'without change in its general construction, the method of operation maltin@r it applicable for use as an alarm in any position wherein a movable part will be thrown in Contact with .a drive wheel arranged to operate the bell-striking mechan ism.

For a full understanding ci the invention and the merits thereof, reference is to be had tothe following description and accompany ting drawings7 1n which Z- shown.- The lever 3, i'u

Figure l is a plan view of my improved device with the bell case removed and the gong 1n section, to show the bell operating mechanism. Fig. 2 is a transversesectional View. Fig. 3 1s horizontal sectional view thereof. l

Corresponding and like parts are referred description and indicated in all the views o the drawings by the same reference characters.

Referring to the drawin s, the numeral 1 designates a portion of a oor to which the base plate 2 is fastened in any suitable manner, as by screws through the openingr 2, as

crumed on said-base plate 2 .and held in position by a. screw 4,

'serves to throw the device into and out of its operative and' passive positions. Attached to the end of the lever 3 by means of a slot formed therein is a spring 5, the other end of' `which is secured in a similar slot in 'the lug 6 on thebell case 7, said lug forming a part of the bell case, and tension exerted on the springr by movement of 4the lever 3 in either direction holds th device from, lateral movey ment when occupying an operative position.

The numeral 8 designates a drive wheel mounted in the lower portion of the bell case 7 and extending below the same, adapted to engage the face ot a roller 9 mounted on the end oit the spindle l() located on the inner side of the door, said roller being made adjustable by means ol aV set screw. Attached to the other end of the spindle 10 and located on the outside'oi the door is a cra-nk handle l?. by means oi' which the roller 9 is actuated to ,turn the drive wheel 8 when in use as a door bell. (ln the opposite side of the drive wheel 8 and occupying the same relative position to the drive wheel, 8 as the roller S), is a rubber roller 13 attached to the end of the spindle lll ,extending through the door from the door knob, and by means of which the rollerll will be actuated. to turn the drive wheel and set the bell mechanism in motion when in use as an alarm.

Mounted in the bell case by means of a. screwbolt l5 immediately above the drive wheel and engaging the face thereof is a roller 16, said roller carrying at its outer end a ratchet wheel 17.

1S designates a stril-:er frame pivotally mounted in the bell case 7 by means of a screw vbolt 18 and provided with teeth 19 and oppositely extending` arins'lO, cach caru rying a striker 2l. rlhe teeth 19 alternately engage the teeth ot the ratchet wheel 17,

thereby imparting a rockingl or to and fro' motion to the frame 1,8 and causing the strik.- crs 2l on theI arm 20 to come suddenly in contact with the lugs 252 on the inner face of the bell or gong 23. Additional stress upon the striker arm in order to alternately dis engage the teeth 19 from the ratchet wheel 17 is secured by moans oit a spring 20', the opposite ends olf which are secured to the striker frame 18 and bell 'ase 7. A screw Qfl pass* ing through the case 7 and gong 23 holds the gong` rigidly in place so that the strikers will invariably come in contact with the lugs 29. on the inner face. i

In order to insure a goed contact surface, the roller 9 is provided with a rubber band around its periphery `and similar bands 2G and 27 are employed on' the peripheries 'of the drive wheel 8 and ratchet roller 16 respectively.4 The lever 3 is provided on its outer ace'with a knob 28- :lor manipulation in either direction, the extentof such movement being` governed by lugstl on the base plate 2. A guide 3() 011 said base plate 2 working in a recess ci' slot '31 formed in the lever3 is also employed to control the movenient. The numeral 32 designates a screw bolt passing through both sides of the lower portion of thebell case 7 and while serving as a bearing for the drivewheel 8 acts as a support lfor the lower portion of the bell case. The screw bolt 4 passing through openings in the base plate 2 and lever 3 and the bell case 7 niovably secures the several parts in their proper position relative to each other. f ,v i

With this arrangement sliown,ltrhe'opera tion of the deviceis as' follows -The device when in use as a door be'll occupies a position sutlicieiitly close to the roller 9 to allow the drive wheel to engage' said i'oller and receive the motioneimparted therefrom. In this position the crank handle l2 when turned in either direction ,by means ot' the roller will rotate the drive wheel 8 which iii turn rotates the ratchet roller 16 vand ratchet-wheel 17, lsaidratchet wheel alternately engaging the teeth v19 and the striker traine lo' aiidiinpart-ingto said frame' a to and fro motion and causing the strikers 2l oii the striker arms 12() to come suddenly in contact with the lugs 22 on the inner face of the gong. As a burglar alarm the operation is the same when the drive wheel 8 is moved in contact with the roller 13 motion being primarily imparted in that event by the turning of the door knob and roller 13.

Without change iii its general construction, the device is applicable 4as a' burglar alarm inany position wherein a movable part will engage and rotate the drive Wheel 8 thereby setting the bell-operating mechanism in motion to sound an alarm.

Having thus described the invention, what is claimed as new is 1`- l l. ln a device of the character described, a base plate, a bell case inovably mounted thereon, a drive wheel vmounted within and projecting out of the bell case, a roller mounted within the bell case and located in close proximity with said drive wheel to receive imparted motion therefrom, a ratchet wheel rigidly attached to the face ot' said roller, a pivotcd striker Aframe mounted within said bell ease and coperating with said ratchet wheel, and a striker carried by said frame, substantially dcsciibcd.

2. In a device oi the character described, a baseplate, a. bell case inovably mounted thereon, a bell gong* mounted within said bell case and provided with lugs on its inner face, a drive wheel mounted within and project'ing out of the bell case, a roller mounted lwithinthe bell case in close proximity with l said vdrive wheel to receive impartedimo'tion therefrom, a ratchet wlieel rigidly attached to the face of'said roller,'a pivoted two arm bell case, a drive wheel mounted in and provjccting out of the bell case and oppositely disposed contact vrollers to'r imparting inotioii to the drive wheel when thrown in contact therewith by means of said lever slib'- stantially as described. f

4;. ln va device of the character described, a base plate, a lever fulcrumed oii said base plate, a bell'case inovably mounted upon said base plate, a spring connecting the lever vand bell case, and a drive wheel mounted within and projecting out of the bell case adapted.

to be thrown by said lever into contact with a moving surface to' receive motion imparted therefrom substantially vas described. l

comprisinga base plate, a bell case pivotally mounted thereonyal lgong carried lby Ysaid v .g5 5. A' device off' the character described" case, a rstriker mounted :within the ease and arranged to tap tlie'gong, aagfladrive Wheel journaled in the'case and having an oper-A ative connection with said striker and adepted to be rotated while occupying a position in the plane of the swinging movement of said bell I 4 6. A. device of the character described, comprising a base plate, a lever, fulcrumed thereon, a bell case pivotally mounted on .the base plate, a springconnecting said case to one` ot' said levers, means for lioldingvtlie lever on the base plate in different positions, a gong mounted within said case, a striker for said gong, a drive wheel in said case, and a drive connection between said drive wheel and said striker.

In testimony whereof I affix my signature i n presence ol' two witnesses. l

HENRY ivresse. [1.. s]

Witnesses: i

lV. F. KAREY, S. B. Houma. 

